Which of the following germ layers gives rise | vedclass

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(C) In human development,the germ cells (primordial germ cells) are derived from the epiblast during early embryogenesis. These cells migrate to the y

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Mesoderm

Vedclass · Answer

(C) In human development,the germ cells (primordial germ cells) are derived from the epiblast during early embryogenesis. These cells migrate to the yolk sac and eventually to the developing gonads. Among the primary germ layers,the germ cells are not derived from the ectoderm,endoderm,or mesoderm in the traditional sense of somatic tissue differentiation. However,in the context of standard biology curriculum questions regarding the origin of germ cells,they are often associated with the epiblast,which is an early embryonic structure. If forced to choose among the primary germ layers for the origin of the gonadal stroma or associated structures,mesoderm is the primary contributor. Given the standard options provided in many competitive exams,the correct answer is often considered to be the epiblast,but since it is not listed,we identify that germ cells originate from the epiblast,which is distinct from the three primary germ layers. However,if the question implies the origin of the gonads,the mesoderm is the correct answer.

Hormone	Site of production
$A$. $hCG$ and $hPL$	$(ii)$ Placenta
$B$. Progesterone	$(iii)$ Corpus luteum
$C$. Androgens	$(iv)$ Leydig cells
$D$. Relaxin	$(i)$ Ovary

List-$I$	List-$II$
$A$. The foetus movement starts and hair appears on the head	$I$. $24$ weeks of pregnancy
$B$. The foetus develops limbs and digits	$II$. $20$ weeks of pregnancy
$C$. The foetus develops external genital organs	$III$. $8$ weeks of pregnancy
$D$. The foetus body is covered with fine hair; eyelids separate and eyelashes are formed	$IV$. $12$ weeks of pregnancy

Which of the following germ layers gives rise to the germ cells?

Similar Questions

Where is the chorion found?

Match the hormone with its site of production:
Hormone Site of production
$A$. $hCG$ and $hPL$ $(ii)$ Placenta
$B$. Progesterone $(iii)$ Corpus luteum
$C$. Androgens $(iv)$ Leydig cells
$D$. Relaxin $(i)$ Ovary

High increase in $oxytocin$ level in a pregnant lady results in:

Identify the odd one out among the hormones produced only during pregnancy.

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